FAB-10546 fix broken image links

Change-Id: I35919c476cdcb94603ed3b5ef39821150dc07c67
Signed-off-by: Christopher Ferris <chrisfer@us.ibm.com>

Author: christo4ferris

docs/source/_templates/layout.html

@@ -4,8 +4,8 @@
 
 <br><img style="background-color: #fff; height: unset; width: unset;" alt="Hyperledger Fabric" src={{ pathto("_images/hyperledger_fabric_logo_color.png",1) }} />
 <br>
-<a href="https://github.com/hyperledger/fabric"><img style="padding: 0px; margin: auto auto auto auto;" alt="GitHub" src={{ pathto("_static/images/github_button.png",1) }}/></a>
-&nbsp;<a href="https://stackoverflow.com/questions/tagged/hyperledger-fabric"><img style="padding: 0px; margin: auto auto auto auto;" alt="StackOverflow" src={{ pathto("_static/images/stackoverflow_button.png",1) }}/></a>
-&nbsp;<a href="https://chat.hyperledger.org"><img style="padding: 0px; margin: auto auto auto auto;" alt="Rocket Chat" src={{ pathto("_static/images/rocketchat_button.png",1) }} /></a>
-&nbsp;<a href="https://www.youtube.com/playlist?list=PL0MZ85B_96CH7wvtrRzV7SvtRY0sI0DEg"><img style="padding: 0px; margin: auto auto auto auto;" alt="Youtube Channel" src={{ pathto("_static/images/youtube_button.png",1) }}/></a>
+<a href="https://github.com/hyperledger/fabric"><img style="padding: 0px; margin: auto auto auto auto;" alt="GitHub" src="_static/images/github_button.png"/></a>
+&nbsp;<a href="https://stackoverflow.com/questions/tagged/hyperledger-fabric"><img style="padding: 0px; margin: auto auto auto auto;" alt="StackOverflow" src="_static/images/stackoverflow_button.png"/></a>
+&nbsp;<a href="https://chat.hyperledger.org"><img style="padding: 0px; margin: auto auto auto auto;" alt="Rocket Chat" src="_static/images/rocketchat_button.png"/></a>
+&nbsp;<a href="https://www.youtube.com/playlist?list=PL0MZ85B_96CH7wvtrRzV7SvtRY0sI0DEg"><img style="padding: 0px; margin: auto auto auto auto;" alt="Youtube Channel" src="_static/images/youtube_button.png"/></a>
 {% endblock %}